Amid reports that the White House was seriously rattled by Melissa McCarthy’s brilliant turn as Press Secretary Sean Spicer on “Saturday Night Live” this past weekend, Rosie O’Donnell has offered to also go in drag to portray another member of President Donald Trump’s inner circle: chief strategist Steve Bannon.

In several tweets, reported by Vanity Fair, O’Donnell had said she was “here to serve,” referencing how Alec Baldwin has also nailed his impersonation of the president on “SNL.”

@calvininsf – i am here to serve – alec has trump – melissa has spice – i would need a few days to prepare – so if called – i will be ready

Vanity Fair notes two key reasons for why O’Donnell would get under Trump’s skin if she were to take on Bannon — portrayed in news reports as the ideological mastermind behind some of Trump’s most controversial moves as president, such as the ban on immigration from seven predominantly Muslim countries.

The first is that O’Donnell and Trump have had a long, nasty and very public feud, which is often focused on the former celebrity mogul’s evident antipathy towards O’Donnell, based on her gender. The feud started in 2006 when O’Donnell made disparaging remarks about the future president on “The View.” He told People: “Rosie’s a loser. A real loser. I look forward to taking lots of money from my nice fat little Rosie.”

Trump’s public bullying of O’Donnell continued, with him taking every possible opportunity to fire rhetorical shots at her and even including an insult directed towards the comedian and actress in completely unrelated conversations, Vanity Fair said.

The other possible reason that Trump and the White House would be aggravated by O’Donnell playing Bannon is that Trump made disparaging “nasty woman”-type comments on the campaign trail, while making it clear that he has certain expectations when it comes to gender, Vanity Fair said.

Notably, he started another public feud with former Fox News host Megyn Kelly when she asked him about his attitude toward women during a primary debate. Kelly’s perceived aggression prompted Trump to later claim she had “blood coming out of her eyes, blood coming out of her wherever.” He also referred to her as a “lightweight” on Twitter.

Reports have also emerged in the past week that the former beauty pageant owner-turned-president has particular dress code expectations when it comes to female White House employees, Racked reported. The president likes female staffers to “to dress like women.” That means dresses are apparently preferred.

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The fact that a female comedian like McCarthy impersonated Spicer, and with what critics are calling devastating accuracy, was especially upsetting to Trump and the White House, Politico reported.

While Spicer publicly expressed mild displeasure with McCarthy’s bullish, gum-chomping, fact-concocting impersonation of him, “it was Spicer’s portrayal by a woman that was most problematic in the president’s eyes,” sources close to Spicer told Politico.

There are concerns that the unflattering send-up by a female comedian “is not considered helpful for Spicer’s longevity in the grueling, high-profile job,” Politico said. “Trump doesn’t like his people to look weak,” added a top Trump donor.

Trump’s uncharacteristic Twitter silence over the weekend about the “Saturday Night Live” sketch was seen internally as a sign of how uncomfortable McCarthy’s portrayal made the White House feel, Politico added: “Sources said the caricature of Spicer by McCarthy struck a nerve and was upsetting to the press secretary and to his allies, who immediately saw how damaging it could be in Trump world.”

Now, O’Donnell seems eager to find out how Trump would react to having her, one of his female arch-enemies, portray his top advisor. That O’Donnell would want to join “Saturday Night Live’s” “increasingly confrontational” portrayal of Trump’s White House shouldn’t come as a surprise, given her history with Trump, Vanity Fair noted. As the idea picked up steam on Twitter, O’Donnell indicated she was more than game.